DETROIT- JANUARY 10: The all-new 2012 Buick Verano compact luxury sedan is introduced to the media at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

<> on January 10, 2011 in Detroit, Michigan.

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: The new Toyota Prius C Concept vehicle makes its debut at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: The all new BMW 1 Series M Coupe makes its world debut at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

<> on January 10, 2011 in Detroit, Michigan.

VoltWinsNACOYStephens01.jpg

General Motors Vice Chairman Tom Stephens hoists the 2011 North American Car of the Year trophy awarded to the Chevrolet Volt Monday, January 10, 2011 at the North American International Auto Show in Detroit, Michigan. (Photo by Jeffrey Sauger for Chevrolet)

Detroit Auto Show Previews Newest Car Models From Around The World

<> on January 10, 2011 in Detroit, Michigan.

Volt-Stephens

General Motors Vice Chairman Tom Stephens (WWJ Photo/Jeff Gilbert)

Fiat CEO Sergio Marchionne

(WWJ Photo/Jeff Gilbert)

Cobo-Rooftop

(WWJ Photo/Bill Szumanski)

2012BuickVeranoSchwegman02

The 2012 Buick Verano compact luxury sedan appears through the fog during its world debut at the North American International Auto Show Monday, January 10, 2011 in Detroit, Michigan. The Verano is equipped with 10 standard air bags and a next-generation radio system with OnStar-powered connectivity that enables seamless communication between the Verano and the driverÕs smart phone. The Verano goes on sale in the fourth quarter of 2011. (Photo by Steve Fecht for Buick)

2012BuickVeranoSchwegman01

Buick U.S. Marketing Vice President John Schwegman introduces the 2012 Buick Verano compact luxury sedan during its world debut at the North American International Auto Show Monday, January 10, 2011 in Detroit, Michigan. The Verano is equipped with 10 standard air bags and a next-generation radio system with OnStar-powered connectivity that enables seamless communication between the Verano and the driverÕs smart phone. The Verano goes on sale in the fourth quarter of 2011. (Photo by Jeffrey Sauger for Buick)

2012BuickVeranoReveal01

The 2012 Buick Verano compact luxury sedan appears through the fog during its world debut at the North American International Auto Show Monday, January 10, 2011 in Detroit, Michigan. The Verano is equipped with 10 standard air bags and a next-generation radio system with OnStar-powered connectivity that enables seamless communication between the Verano and the driverÕs smart phone. The Verano goes on sale in the fourth quarter of 2011. (Photo by James Fassinger for Buick)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: The new Volkswagen Passat makes its world Derbut at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: A drum group performs at the World Debut of the new Volkswagen Passat at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: John Schwegman, Buick U.S. Marketing Vice President, introduces the all-new 2012 Buick Verano compact luxury sedan is introduced to the media at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: The all-new 2012 Buick Verano compact luxury sedan is introduced to the media at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

<> on January 10, 2011 in Detroit, Michigan.

Detroit Auto Show Previews Newest Car Models From Around The World

<> on January 10, 2011 in Detroit, Michigan.

Detroit Auto Show Previews Newest Car Models From Around The World

<> on January 10, 2011 in Detroit, Michigan.

Detroit Auto Show Previews Newest Car Models From Around The World

<> on January 10, 2011 in Detroit, Michigan.

Detroit Auto Show Previews Newest Car Models From Around The World

<> on January 10, 2011 in Detroit, Michigan.

Bill Ford, Executive Chairman of Ford Mo

Bill Ford, Executive Chairman of Ford Motors stands with (L-R) the C-MAX electric car, the Transit Connect electric truck, the Focus electric car and the C-MAX hybrid during the first press preview day at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

The Ford Motor Company, introduces the V

The Ford Motor Company, introduces the Vertek crossover concept car during the first press preview day at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: The all-new 2012 Buick Verano compact luxury sedan is introduced to the media at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

<> on January 10, 2011 in Detroit, Michigan.

Detroit Auto Show Previews Newest Car Models From Around The World

<> on January 10, 2011 in Detroit, Michigan.

Detroit Auto Show Previews Newest Car Models From Around The World

<> on January 10, 2011 in Detroit, Michigan.

Olivier Francois, President and CEO of C

Olivier Francois, President and CEO of Chrysler speaks about the Chrsler 300 during the press preview day at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: A display at the Ford exhibit is shown at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: A Lexus vehicle is shown at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: The Porsche display is shown at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: The Hyundai exhibit is shown at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: The SMART exhibit is shown at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: Matthias Miller, President and CEO of Porsche, introduces the new Porsche 918 RSY to the media at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

918 RSR

Matthias Müller (C), new CEO Porsche, unveils the new 918 RSR sports car during the first press preview day at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

The new Porsche 918 RSR hybrid sports car

The new Porsche 918 RSR hybrid sports car during the first press preview day at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: The new Volkswagen Passat makes its world Derbut at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)

Detroit Auto Show Previews Newest Car Models From Around The World

DETROIT- JANUARY 10: Members of the media arrive at the 2011 North American International Auto Show January 10, 2011 in Detroit, Michigan. Approximately 4500 journalists from over 60 countries are attending the NAIAS, which features more than 30 worldwide debuts of vehicles by automotive manufacturers from around the world. (Photo by Bill Pugliano/Getty Images)